Austin is home to one of the priciest collections of office space in the country.

Downtown's Congress Avenue ranked No. 10 for the most expensive streets for commercial real estate in a December report by Jones Lang LaSalle IP Inc., or JLL.

While the area was traditionally dominated by state offices and financial institutions, "a wave of new office, multifamily and retail developments has transformed Congress Avenue into one of the market’s most dynamic corridors," the report states.

The vacancy along Congress is 9.5 percent and the average office rent is $58.20 per square foot, according to the report.

That compares with metro-wide vacancy of 10.8 percent and an average rent of $37.24, JLL said.

Additionally, JLL reports that there is more than 2.9 million square feet of commercial space under construction in the Austin area, with half a dozen buildings set to deliver this year in the Central Business District, Northwest, South and East submarkets.

Congress Avenue is home to some of Austin's largest skyscrapers, as well as some of its most recognizable. Frost Bank Tower at 401 Congress Ave. is the largest around with 535,078 square feet of leasable space. There is also One Eleven Congress at 111 Congress Ave. (518,385 square feet); 600 Congress at 600 Congress Ave., previously known as One American Center (503,951 square feet); 816 Congress Ave. (434,801 square feet); and 301 Congress Ave. (428,419 square feet).

Check out the gallery below for a virtual tour of the largest office skyscrapers in town, and the list at the bottom of this story has extensive data on office towers.